Key matrix for a telephone handset



FIG. 1 is a front elevational view of a key matrix for a telephone handset showing our new design;

FIG. 2 is a bottom, right side perspective view thereof; and,

FIG. 3 is a top, left side perspective view thereof.

The broken lines showing of the front of a telephone handset is for illustration purposes only and forms no part of the claimed invention. 

The ornamental design of a key matrix for a telephone handset, as shown and described. 